The Complete Works of Darwin, published by D. Appleton and Company.
The Works of Alfred Russel Wallace.
Francis Darwin’s “Life of Charles Darwin.”
Huxley’s Writings, passim.
Haeckel’s “Natural History of Creation.” Weismann’s “Studies in the Theory of Descent” and subsequent papers.
Romanes’s “Scientific Evidences of Organic Evolution.”
Lankester’s “Degeneration.”
Fiske’s “Darwinism and Other Essays.”
For adverse criticism of Darwin, read Mivart’s “Genesis of Species,” and the Duke of Argyll’s “Unity of Nature.”
